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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020
Valuation Allowance, Deferred Tax Asset, Change in Amount | $ 1,200 |
Undistributed Earnings of Foreign Subsidiaries | 7,900 | $ 10,300
U.S. |  |
Operating Loss Carryforwards | 0 |
Tax Credit Carryforwards | 753 | 0
State |  |
Operating Loss Carryforwards | 3,400 | $ 76,000
Tax Credit Carryforwards | 1,000 |
Unlimited carryover | 50 |
U.K. |  |
Operating Loss Carryforwards | $ 12,300 |

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